Quantitative Aptitude Ques 905

Question: A sum of Rs. 2200 is invested at two different rates of interest. The difference between the interests got after 4 yr is Rs. 202.40. What is the difference between the rates of interest per annum? [IOB (PO) 2013]

Options:

A) 3.3%

B) 2.3%

C) 3.5%

D) 2.5%

E) None of these

Show Answer

Answer:

Correct Answer: B

Solution:

  • Let the rates of interest be $ r _1% $ and $ r _2% $ per annum then
    $ \frac{2200\times 4,(r _1-r _2)}{100}=202.40 $

$ \Rightarrow $ $ r _1-r _2=\frac{202.40\times 100}{2200\times 4} $ = 2.3% per annum

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